Traefik middleware cookie filter plugin

Simple plugin that removes all except specific cookies from a request.

If you do not provide any cookies that should be kept or you provide an empty list then all cookies will be removed.

Note that this plugin does not in any way modify cookies or anything else in responses, only in requests.

Based on: https://github.com/traefik/plugindemo

Demo

Navigate to the demo folder in the repo to run a quick docker-compose demonstration of this plugin. It includes additional information on how to start and use the demo.

The demo also illustrates how the plugin can be loaded in a traefik docker image and used without relying on the traefik Pilot. For more information about packaging plugins in an image see here.

Usage

Add the plugin in your static configuration

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# Static configuration
experimental:
  plugins:
    cookieFilterPlugin:
      moduleName: github.com/SwissDataScienceCenter/cookiefilter
      version: "0.0.1"

Use the plugin in your dynamic configuration like this

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# Dynamic configuration

http:
  routers:
    my-router:
      rule: host(`demo.localhost`)
      service: service-foo
      entryPoints:
        - web
      middlewares:
        - cookiefilter

  services:
   service-foo:
      loadBalancer:
        servers:
          - url: http://127.0.0.1:5000
  
  middlewares:
    cookiefilter:
      plugin:
        cookiefilter:
          keepCookies:
            - cookieName1
            - cookieName2

The middleware defined above would make it so that requests to service-foo are stripped of all cookies except the ones with names cookieName1 and cookieName2.